You are an operations manager for a local steel manufacturing company, and you are in the process of selecting a vendor for a new type of metal finishing machine. for the past week you’ve tested machines from three different companies and collected the randomly sampled data below that shows how many parts each machine produced in seven different one-hour periods over the course of your manufacturing test. is the average production of these machines the same, or is one of them different from the others? [if the productivity is the same, you will simply choose the machine with the lowest cost.] you may assume that all populations are independent and nearly normal. test at the 98% confidence level.

Experienced problem solvers always consider both the value and units of their answer to a problem. why?

Exercise 2-12 cost behavior; high-low method [lo2-3, lo2-4] speedy parcel service operates a fleet of delivery trucks in a large metropolitan area. a careful study by the company’s cost analyst has determined that if a truck is driven 120,000 miles during a year, the average operating cost is 11.6 cents per mile. if a truck is driven only 80,000 miles during a year, the average operating cost increases to 13.6 cents per mile. required: 1.& 2. using the high-low method, estimate the variable and fixed cost elements of the annual cost of truck operation. (round the "variable cost per mile" to 3 decimal places.)

The year is 2278, and the starship enterprise is running low on dilithium crystals, which are used to regulate the matter-antimatter reactions that propel the ship across the universe. without the crystals, space-time travel is not possible. if there is only one known source of dilithium crystals, the necessary conditions for a monopoly are met. part 2 (1 point)see hint if the crystals are government owned or government regulated, and the government wants to create the greatest welfare for society, then it should set the price choose one or more: a. so only the rich can afford space-time travel. b. at the profit-maximizing price. c. at the efficient price. d. using the marginal-cost pricing rule. e. so everyone can afford space-time travel. f. at the monopoly price.